Enum sql_ast::Value [−][src]
pub enum Value { Number(String), SingleQuotedString(String), NationalStringLiteral(String), HexStringLiteral(String), Boolean(bool), Date(String), Time(String), Timestamp(String), Interval { value: String, leading_field: DateTimeField, leading_precision: Option<u64>, last_field: Option<DateTimeField>, fractional_seconds_precision: Option<u64>, }, Null, Default, }
Expand description
Primitive SQL values such as number and string
Variants
Number(String)
Numeric literal
SingleQuotedString(String)
‘string value’
NationalStringLiteral(String)
N’string value’
HexStringLiteral(String)
X’hex value’
Boolean(bool)
Boolean value true or false
Date(String)
DATE '...'
literals
Time(String)
TIME '...'
literals
Timestamp(String)
TIMESTAMP '...'
literals
INTERVAL literals, roughly in the following format:
INTERVAL '<value>' <leading_field> [ (<leading_precision>) ] [ TO <last_field> [ (<fractional_seconds_precision>) ] ]
,
e.g. INTERVAL '123:45.67' MINUTE(3) TO SECOND(2)
.
The parser does not validate the <value>
, nor does it ensure
that the <leading_field>
units >= the units in <last_field>
,
so the user will have to reject intervals like HOUR TO YEAR
.
Show fields
Fields of Interval
value: String
leading_field: DateTimeField
leading_precision: Option<u64>
last_field: Option<DateTimeField>
fractional_seconds_precision: Option<u64>
The seconds precision can be specified in SQL source as
INTERVAL '__' SECOND(_, x)
(in which case the leading_field
will be Second
and the last_field
will be None
),
or as __ TO SECOND(x)
.
NULL
value
use the default value
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for Value
impl UnwindSafe for Value
Blanket Implementations
Mutably borrows from an owned value. Read more